package thread;

public class SycnDemo2 {
    public static void main(String[] args) {
        Shop shop1 = new Shop();
        Shop shop2 = new Shop();
        Thread t1 = new Thread("范传奇") {
            public void run() {
                //shop.buy();
                shop1.buy();
            }
        };
        Thread t2 = new Thread("王克晶") {
            public void run() {
                //shop.buy();
                shop2.buy();
            }
        };
        t1.start();
        t2.start();
    }
}

class Shop {
    //public synchronized void buy(){
    public void buy() {
        try {
            Thread t = Thread.currentThread();
            System.out.println(t.getName() + "正在挑衣服");
            Thread.sleep(5000);
            //synchronized (this) {
                synchronized ("hello") {//全局只有一个字面量对象 不管有没有并发都会分开执行 所以不是好的锁对象
                //synchronized (new Object()) {//不可以new 新的对象
                System.out.println(t.getName() + "试衣服");
                Thread.sleep(5000);
            }
            System.out.println(t.getName() + "结账");

        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}